Water-cooled valve or damper.



L. L. KNOX.

WATER COOLED VALVE on DAMPER.

APPLICATION FILED DEC- 2|, l9|6- 1 ,26 ,555, Patented Apr. 2, 1918.

2 SHEETS--SHEET I INVENTOR M. r gflm W QM L. L. KNOX.

WATE'R COOLED VALVE OR DAMPER.

APPLICATION FlLhl) DEC. 2|. l9l6- Apr. 2 2 SHEETS-SHEET 2.

WITNESSES Q MQMU assists,

warren snares rarnnr ornroa LUTHER L. KNOX, 0F AVALON, PENNSYLVANIA, ASSIGNOR T0 BLAW-KNOX COMPANY,

Q PITTSBURGH, PENNSYLVANIA, A

CORPORATION" 01* NEW JERSEY.

WATER-COOKED VALVE 0R DAJHPER.

Specification of Letters Patent.

Patented Apr. 2, third.

To all whom it may concern:

Be it known that I, LUTHER L. Knox, a citizen of the United States, residing at Avalon, Allegheny county, Pennsylvania, have invented a new and useful Improve-- ment in Water-Cooled Valves or Dampers, of which the following is a full, clear, and

exact description, reference being had to the accompanying drawings, forming part of this specification, in which-- Figure 1 is a longitudinal vertical section through a fine structure having a valve embodying my invention;

Fig. 2 is a section on the line II-II of Fig. 1;

Fig. 3 is a transverse vertical section on the line IIIIII of Fig. 1;

Fig. 4: is a sectional perspective view of the seating member.

My invention has relation to water-cooled dampers or valves, particularly designed for furnace fiues.

The object of my invention is to provide a water-cooled damper or valve of novel construction and arrangement in which the parts are thoroughly protected by the circulation of cooling water which is effected in a novel manner.

The nature of my invention will be best understood by reference to the accompanying drawings, in which I have shown the preferred embodiment thereof and which will now be described, it being premised, however, that various in the details of construction and arrangement of the various parts without departing from the spirit and scope of my invention as defined in the appended claims.

In these drawings, the numeral 2 designates a flue structure. 3 is the frame or seating member of the valve or damper, which is seated in the wall of the flue structure, its lower end portion being supported in a transverse raised abutment 4:, on the bottom wall of said structure. The frame is preferably seated in oblique position, .as shown, so that the action of gravity will assist in maintaining a closed seat through said frame and the movable valve or damper member. The frame 3 is preferably watercooled, and is formed of sheet metal, and has therethrough the line opening 5, which is preferably ofv substantially circular form. This frame is open at its upper end, and its outer walls extent upwardly somewhat above changes can be made the top of the flue structure, where they are connected to the walls of a closed sealing chamber 6.

The vertical side members or lugs of the frame are shown as being of general l..- shape in cross section at thecentral portion adjacent to the opening 5, as shown in Fig. 2, and of channel form above below the opening, thereby providing the guiding extensions 7 The upper portion of the front wall of the guiding projection 7- is cut away and the outer side walls are extended beyond the inner side walls. These projecting portions of the outer side walls and the upper ends of the inner walls of the guiding projections 7 are connected to each other by a U-shaped sheet 7, as clearly shown in Figs. 2 and i to form the front portion of a water space hereinafter mentioned.

The numeral 8 designates the valve or damper proper, which is also a hollow water-. cooled member open at its top and having its upper edge flanged outwardly and downwardly, as shown at 9, and thus forming a continuous downwardly extending flange around the entire periphery of the top of the valve. This downwardly extending flange when the valve is closed enters the space 10, between the inner and outer walls of the seating member 3 and the walls of the U-shaped sheet 7. 11 designates a water supply pipe formed in two telescopic sections, and which extends downwardly within the body of the valve to a point near the bottom thereof, where it terminates in a suitable discharge head 12. The upper telescopic section of this pipe extends through a sealed opening-13 in the top of the casing 6. 14 designates suitable lifting connections attached to the valve and by means of which it may be raised and lowered. These connections also extend through sealed openings, indicated at 15, in the top of said casing. For the purpose of guidin the valve in its movements, it is provide with the wheels or rollers 15 which are journaled in brackets 16, at the upper end portions of the valve, and which rollers are adapted to engage track surfaces 17, on one of the walls of the'casing 6. These tracks are partially-cut away at their lower ends, so that when the valve is in its fully closed position, the rollers 15 will be disengaged from these tracks, thereby leaving the valve 8 to seat itself by gravity against ill the seating face of the frame 3. The cooling water which is discharged within the lower portion of the valve or damper rises as it becomes heated and overflows at the open top of the valve, and thence falls into the open water space 10, at the top of the seating member 3. While the water overflow in this manner through the valve or damper proper may be equalized entirely to provide the cooling water in the seating member, I prefer to provide the latter with an auxiliary water supply pipe 18, which enters said member at its lower portion in the manner shown in Fig. 3, and which is provided with a suitable controlling valve 19. This part may be provided with the removable cleanout plug 20 .and a similar clean-out plug 21 may also be provided at the opposite side of the seating member. 22 designates an overflow pipe leading from the water space at the upper portion of the sea-ting member. This overflow pipe together with the auxiliary water supply pipe 18 may be conveniently arranged in pits 23 at opposite sides of the flue so as to give ready access thereto and also to the clean-out plugs 20 and 2i.

Llt will be noted that when the valve or damper is in the closed position shown, the depending flange 9 at the upper portion of the valve extends down into the body of water within the water pocket 10, thus forming an eflicient gas seal. When the valve is opened, this seal is broken, but the gases at this time have a free passage to the flue and any gas which may escape upwardly will be caught and confined within the closed chamher '8.

.llly invention provides a valve or damper arrangement which is especially well adapted for use in flues where relatively high temperatures obtain, since in both the valve itself and in the seating member, provision is made for a continuous circulation of a relatively large body of water. It will further be noted that both the valve and the seating member are so placed in: the flue I structure that they can be readily removed when necessary for repairs or replacement. The several parts can be readily constructed from sheet metal lates or shapes preferably welded at the Joints.

I claim:

1. A valve or damper arrangement for furnace flues, comprising a hollow seating member having a flue opening therethrough, a valve seat surrounding the flue opening, there being a valve opening leading into the seating member at one side of said seat, a valve in said opening arranged to be moved to said seat to close the flue opening and to be withdrawn into the seating member to open the flue opening, there being a water pocket. surrounding the valve opening,

means for supplying water to said pocket,

menses and a depending flange surrounding the valve and arranged to extend into the water pocket when the valve is in its lowered position, substantially as describe 2. A valve or damper arrangement for turnace flues, comprising a hollow seating member having a flue opening therethrough, a valve seat surrounding said opening, a valve opening leading into the seating member at one side of said seat, a hollow valve in said opening arranged to be moved onto said seat to close the flue opening and to be withdrawn into the seating member to open the flue opening, there being a water pocket surrounding the valve opening communicat- 'ing with a lower portion of the valve memher, there being a space above the said water pocket for the reception of the valve when in its elevated position, a depending flange surrounding the upper portion of the valve and arranged to extend into, the water pocket when the valve is in its lowered position, means for supplying water to the interior of the valve, the surrounding flange of said valve forming an overflow to permit the water from the valve to fall into the water pocket, and means for permitting water to pass out from the valve member, substantially as described.

3. A valve or damper arrangement for furnace flues, comprising a hollow seating member having a flue opening therethrough, a valve seat surrounding the opening, a valve opening leading into the seating member at one side of said seat, a hollow valve in said opening arranged to be moved onto said seat to close the flue opening and to be with drawn into the seating member to open the flue,'there bein a water'pocket surrounding the valve opening and communicating with the interior thereof, a depending flange surrounding the upper portion of the valve and arranged to extend into the water pocket when the valve is in its lowered position, said flange also forming an overflow for permitting the water which overflows from the valve to fall into the inner portion of the seating member beyond the valve opening, means for supplying water to the interior of the valve, there being an overflow from the seating member below the top of the valve opening, and guiding connections between the top of the valve and the top of the valve seating member, substantially as described.

4. A valve or damper arrangement, comprising a hollow water cooled seatin member with a flue opening therethrougn, said seating member having inner and outer walls above the valve opening forming a water chamber between said walls, there being a through opening between the inner walls, a valve member seated within the opening between the inner walls and arranged to be raised and lowered therethrough to open and close the flue opening, said valve having depending flanges arranged to be seated between the inner and outer walls of the seating member when the valve is in its lowered position, the outer walls of the seating mem- 5 her extendin upwardly above the inner flanges in order to form a casing for the valve member when in its elevated position, means for supplying water to the valve, which water is arranged to overflow into the water chamber in the seating member when 10 the valve is either in its elevated or lowered position, substantially as described.

In testimony whereof, I have hereunto set my hand.

LUTHER L. KNOX. Witnesses:

Geo. H. PARMELEE, H. M. Conwm. 

